Oak buffer



(No Model.)

F. s. WAY.

v I CAR BUPFER.. 4 No. 413,423. Patnted Oct. 22, 1889.

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UNITED STAT S PATENT OFFICE.-

FRANK S. NVAY, OF MOUNT VERNON, LLINOIS, ASSIGNOR TO HIMSELF AND GEORGE B. LEONARD, OF SAME PLACE.

FCAR-BUFFER.

SPECIFICATION formng part of Letters Patent No. &13,423, dated October 22, 1889. i

Application file April 17 1889. Serial No. 307,!595. (No model.)

To all whom it may cowrn: e

Be it known that I, FRANK S. WAY, of Mount Vernon, in the county of J eiferson and State of Illinois, have invented a new and Improved Car-Buffer, of which the following is a full, clear, and exact description; The object of the invention is to provide a new and improved car-buffer which is simple and durable in Construction, Very effective in operation, adapted to prevent all slack of the i draw-bars between the cars, and also adapted to receive all jar incident to the motion of the train.

My invention is an improvement in the class of pneumatic car-buffers, and includes certain novel features of construction, arrangement, and combination of parts, as hereinafter described and claimed.

Fgure 1 is an inverted plan view of the improvement as applied. Fig. 2 is a longitudinal section of the same 011 the line .oc w of Fig. 1. Fig. 3 is a sectional plan view of part of the cylinder on the line y y of Fig. 2.

The improved car-buffer is located in the middle of the under side of the car-p atform A. .An air-ppe B, extending under the car and charged with compressed air under the control of the engineer, is connected, by a branch pipe C, having a valve D anda check Valve E, With the inner end of the cylinder F, located centrally under the carplatform, as shown in the drawings.

In the cylinder F is arranged to slide a piston G, having a suitable packing and carrying the piston-rod H, connected, by a balland-socket joint H', with the rod I', carrying at its outer end the buffer-plate I, held in front of .the nose-piece A' of the platform A. The piston-rod H is guided-in the cylinderhead J, provided with a cock K, serving to form' a'vacuun in the cylinder F, as hereinafter more fnlly described, From the rear end of the cylinder F also leads a small drain-pipe L, extending to one side of the platform and provided with a valve N, which when opened lets out air from the rear end of the cylinder F. In the inside of the oylinder F is formed a longitudinally-extending groove O, (see Figs. 2 and 3), which permits the air to pass from the rear end of the cyl- When the Valve D in the branch pipe C isopen the compressed air from the main pipe B passes through the said branch pipe C, past the check-valve E, into the rear of the cylinder F, in which the compressed air acts on the piston G and forces the same outward, so that the buffer-plate I is moved in contact With the opposite bulfer-plate on the next following car. apart, so that allslack between the two drawheads is taken up. As the pistonG operates against an elastic body-that is, the comp'ressed air all jar incident to the motion of the train is taken up by the said compressed air and the cars are relieved from all jar. It will be seen that when two cars are pressed toward each other the respective bufienplate I moves inward, so that the piston G moves against the air-cushion in the c'ylinder, and as the air is Still more compressed by this movement a very strong cushion is formed, so that there will be no lost motion between the buffers.

My buifers are always jammed against each other by the air pressure in the cylinders, and when a coupling or uncoupling is to be made the connection between the main pipe B is cut off by means of the valve D, so that the pressurecan be released from the cylinder through the small pipe .L by opening its valve N. In case the pressure from the opposite car against the bufer-plate I is very great and moves the latter inward until the' piston G stands over the groove O, as shown in Fig. 3, then the compressed air in the real' end of cylinder F passes to the front end of cylinder, thus releasing the pressure in the cylinder and preventng breakage. When the cylinder F is first charged with compressed air, the cock K is opened, so that the piston G in moving to the front end of the cylinder F drives out the air in this front end of the cylinder. The cock K is then closed, and when the piston G moves rearwardly a Vacuum is forned in the front end of the cylinder. The ball-and-socket joint H' Compen- The two cars are then pushed- IOO sates for all lateral motion of thebuffer-plate I and its rod I'.

Having thus fully described ny invention, I claim as new and desire to secure by Letters Patent- 1. The eombination, with the air-eylinder,

V having an air-outlet pipe L Nnear its inner stop-cook K, at tached to the front end of said eylinder, and the air-supply pipe B O, Conneeted with the other end of the same, as shown and described, whereby a, Vaeuum may be formed in front of the piston, as and for the purpose specified.

3. The conbination of the buffer and pis ton G With the air-cylinder F, having the lengthwise groove O located in its inner side and near its inner end, as shown and described, Whereby'the pressure in rea r of piston is automatically relieved when the letter is near the inner limit of its stroke, as specified.

FRANK S. WAY.

Witnesses:

G. B. HOVVARD, GEORGE M. LEWIs. 

